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磁防护的质量是用屏蔽系数的数值来评定的。即: L=H_σ/H, 式中:H_σ——无屏蔽时的外磁埸; H——屏蔽内的磁埸。单层磁屏蔽经常采用具有高导磁率的坡莫合金(79HM,80HXC),当用这些材料制成的
The quality of magnetic protection is evaluated by the value of the shielding factor. That is: L = H_σ / H, where: H_σ - no external magnetic shield 埸; H - shielding magnetic 埸. Monolayer magnetic shields often use Permalloy (79HM, 80HXC) with high magnetic permeability. When made from these materials